/Engine/Plugins/Runtime/Metasound/Source/MetasoundFrontend/Public/Interfaces/MetasoundFrontendInterfaceRegistry.h
Deprecated* Option (renamed 'IsModifiable') is now data driven and accessibly from the interface (via GetInterface) perUClassoption. If no class options found, addition/removal is now considered to be implicitly true
virtual bool EditorCanAddOrRemove() const